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Dec. 25, 1928.

J. REID APPARATUS FOR MACHINING RADIATORS AND THE LIKE Filed May l, 1926 3 Sheets-Sheet W/fr Ess ec. 25, i928. )1,696,453

J.QE|D

APPARATUS FOR MACHINNG RADIATORS AND THE LIKE Filed May l., 1926 3 Sheets--Sheetl 2 3 a? im 55 36 5 A u n l M r .v *i MM Dcs, wm. 1,6%,453

J. REI@ APPARATUS FOR MACHINING RADIATORS AND THE LIK Filed May 1, 12 s sheets-sheet 3 grjwi Jhr Ess y zl/ 'V Ey TMR' @ys Patented @no 25, i923.

entren PATENT FFECSE.

JAMES REID, OF SYRACUSE, NEW YORK; EMMA F. REID AND CHARLES T. REID ADMINSTRATORS 0F SAT-i1) JAMES REID, DECEASED.

APPARATUS FOR MACHNING RADIATORS AND THE LIKE.

Application filed May 1,

This invention relates to a method oif' and apparat-us for machining radiator sections and analogous objects requiring boring, tapping and facing on one or both sides, and trequently at diilerent port-ions thereof r'or the reception of nipples, pipes or other connections commonly used 'for 'the circulation of the heat-ing `agents such as steam or hot water through one or more radiator sections.

rllhe main object is to provide simple and ei'licient means tor boring tapping and lacing one or more parts ot the radiator or other object inone and the saine operation or by the continuous movement ot' the tool holder in one and the same direction.

Another object is to assure a uniform facing oit' different radiator sections or other objects operated upon so that when the machine is set I'or opeation upon opposite sides ot a radiator section the dressed surfaces will be uniform distances apart.

A further Objectis to provide means Whereby the tapping members commonly known as chasers7 will be automatically released and retracted from the tapping positions at the end oi the tapping strolre and in'nnediately following the beginning ot the facing operation.

A'urt-her object is to provide means for adjusting the cutting tool axially relatively to the boring and tapping tools tor varying the axial depth of cut on the tace of the object or distance betwe-en the dressedfaces when both sides ot the object are operated upon simultaneously.

Another object is to provide adjustable means for regulating the time of release of the tapping members 'from their tapping positions relatively to the boring and facing operations @ther objects and uses relating to specilic parts ol' the device will be brought out in the following description.

ln the drawings igure l is a longitudinal vertical sectiona View`r partly in elevation. or a machine enibodying the various features oi my invention ior operating upon opposite sides of radiator section or similar hollow object. the tool holders and actuating means therefor being shown in their retracted positions.

Figure 2 is an enlarged detail sectional rien taken on line 2 2, Figure 1.

Figure 3 is an enlarged longitudinal verti- 1926'. Serial No. 106,007.

cal sectional view of a part of the same machine showing a radiator section in position to be operated upon.

Figure l is a horiontal sectional vie-w taken in the plane or" line H, Figure 3.

Figure 5 is an enlarged longitudinal sectional view similar to Figure 3 showing the opposed tool holders in their extreme inward positions after performing their respective boring, tapping and facing operations7 the tapping members being shown in their retracted positions.

Figure 6 is an end face view of the. boring tool and adjacent end of the holder therefor.

Figure 7 is a transverse sectional view through theI tapping members and holder showing the retracting spring for said members.

Figures 8 and 9 are transverse sectional views taken in the planes of lines 8 8, and 9-9, respectively or' Figure 5.

Figure l0 is a detail sectional view taken in the plane oit line 10-10, Fligure 8.

As illust-rated, this machine comprises a main supporting frame -1- having a central transverse recess -2 in its upper sid-e midway between its ends for receiving a radiator section as A. or other object to be operated upon, said frame being provided with opposite pairs of co-axial bearings -8- at opposite ends of t-he central rec ss or opening -2-, the bearings -3 of 'each pair being also spaced apart axially for receiving between them suitable worm gears -eland worms -5- which are mounted upon transversely extending shafts -8- for rotating the gears at uniform speed. i

Each pair of bearings 3m is adapted to receive and support a rotary and axially movable sha-tt -7- so that the two shafts may be arranged in co-axial alinement with their inner ends facing each other at op positc ends of the opening -2-.

The gears -fl are splined u pon their respective sl a'lts -7- for impartingrotary motion thereto and permitting said shafts to be moved vendwise relatively to the gears which are held against axial movement bv and between the bearings -8- of the corresponding pair.

Tool holders.

Each shaft -7- is provided with a coaxial tapered socket h8- 1n its inner end for reoeivinv a correspondingly tapered shank Q .ot .a tool holder V `l.) which, when plarteil 'in iapierative position, extends inwardly some distaiiee beyond the inner end of the shalt and into the openii'io` 2 l T he tapeiee shank Q ot eaeh tool holder is tightly wedged in its eorrespondin;` socket to rotate .with the shaft and is additionally held in operative position by means ot a elainping;` bolt 1l entendi 4;; through a central lei hwise opening in the shaft '7 and ihi a its ,inner end 'threaded and engaged in the threaded socket in the shank 8 and its outei` .end provided with a head l2 abutting against the Aouter end face ot the shadt 7 t'or retaining the tool holder in operative engagement with 'the shaft against relative endwise or angular movement.

l" boi-inol tool l? secured by screws id to the inner end tace of each of the tool holders 10 to rotatethere vith7 said tool holder being also provided with radial slots lifor :reeeiving radially movable tapping; members --l(5 commonly known as chasers, said slots and tapping members being arranged in uniformly spaced relation ei-reumterentially adjacent the boringl tool l3 The slots 1.5 preterably extend through the inner end 'faee ot' the corresponding holder lO to permit the insertion and remoral ot the tapping members M th erethrough but are normally elosed by the boring; tool --l3 which also serves to retain the tapping' members agains inward displacement -from their respective slots and assist in guiding` the tapping members in their radial movement.

The peripheral edges ot the tapping; menibers 1G are proi'idelrl with inv lapered threads for ending the desired threads 'as at oin the walls of the opening, previously formed by the boring tool 13 iinniediately followiiigi the passage of the boringi tool through the adjzuient sido et the radiator.

The inner edges ot the tapping members --llare preterably siiioetli. and tapered aifally and inwardly toi' eofnleral'ive ei ment with a tapered inner end Y llly movable plun wi hin the tool holder ilV Y tappinygy menibe 's out'n lion oit a i'etraetingi; spring` iQ-- audperinitiintg them to be drawn inwardly by said spring` when the tapered portion 17 of the plunger rod lS- is withdrawn in a manner hereinafter described.

The rei'raeting spring 19- for the tapping members or jaws l(3 preferably oonsists et a split ring seated in suitable slots 20 in the inner edges el the jaws7 said slots being inclined toward the axis ot the holder J0 alive position.

The 'ta/:ing tool oomprises a cylindrical collar 21 splined upon the tool holder lO- by means of a key 22 and held in opi'fatii'e position against axial movement by a set sorew 23 Figure 8.

This .collar is provided with a series oi radial slots M arranged in uniformly spaeed relation cireumiterentially tor receiving a corsponding' number ot cut-ter blades 2S- which are held in operative position by tapered keys QG- or wedges inserted in correspon ling openings 24 in the col-lar 2l- Figs. 8 and l0.

The collar Ql is adjustable axially l.on .the tool holder l0 to talle up .wear ot the cutters 25 by means of nuts 27 which are engaged with a threaded peripheral portion of the tool holder l() Suitable means is provided for autfnnati- :ally shitting the plunger -18 axially for controlling the radial movements .of the ,Chasers or tap members 1G said means eonsiszsting in this instance a collar Q8 sli dable axially ot an upon a eylin-drieal .portion of the tool-holder l-0 between the .nuts 27 and inner end of the shaft 10- and splined thereto by a key 2S and proi'or retaining the ring1 in operA .vided with a diametrieally .extending Cross pin i9 which is movable in an axially elongated diametrieal slot 80- in the tool helder 1C' The `outer end vof the` plunger l8 is threaded and engaged in a correspondingly threaded aperture in the `Cross pin 29 where it is held in place by set screw 3.l in one side of the cross pin 29- as shown in Figure 3 whereby the reeiprecation of the col-lar QS along the tool holder l0- will cause a similar movement of tl e tapered inner end ---l7 ot the plunger 18- for extending' the members -l(` when the plunger .is moved inwardly and for releasing said members 16 .to be .drawn inwardly by the spring l9 when the plunger is moved outwardly.

The `traine 1 is provided atopposite sdes oit the opening Q with lene'thwie,

Yfor rfficiring: ,the ribs. YY 3Q one oi: rthe seetions as ZEW- et nach braeliet clamped, to the other sfiofn by (damping belts llwh ich permits len gthwise a dj netent oLl lthe bracket and also serves to hold said brackets in their adjusted positions.

Each bracket extends lenethwise ot and side with an axially elongated recess 3a for receiving the hub of an axially estable stop arm 3( having a concave inner aee lll concentric with the axis of the collar -28- and projecting into the path of movement of an annular flange -28- of said collar as the tool holder is moved toward the work.

The hub of the arm 36M is provided with a central lengthwise threaded aperture engaged by the threaded portion of a screw shaft -87-- which journaled in suitable openings -8S-- in the opposite end walls of thc recess -35- as shown in `igure Ll, the axial length of the hub of the arm 36- being somewhat less than the corresponding length of the recess --35- to permit the stop arm -3t`ito be adjusted endwise as may be required for varying the length'of stroke of the collar -28-- and plunger -l8- and thereby to vary the period of release of the chasers 16- immedately following the boring and tapping operations and just preceding the facing operation which is dependent upon the means for reciprocating the shafts -7-.

The outer end of the screw shaft 37- is provided with an annular groove 39- in which is seated a cross pin -el-O- in the adj acent end of the bracket -33- for holding the shaft against endwise movement when adjusting the arm -36-- rlhe bracket -33- is also provided with a central lengthwise opening -llin which a cylindrical rod -42- is reciprocally movable axially and has its outer end rigidly secured to an additional stop arm 43 so that the arm and rod may move together axially of the shaft -T- and tool holder -l8-.

The inner end of the opening -elis enlarged to form a cylindrical socket 4l-.- in which is mounted a coiled spring -4fl and a washer afi-3 said washer being secured to -the inner end of the rod -42- while the spring elllis interposed between said washer and the end wall of the socket 4f-- for yieldingly holding the stop varm M43- against the outer end face of the bracket as shown in Figure el.

The stop arm L13- projects inwardly partially across the outer end face of the collar 428- to limit the outward axial movement thereof shown in Figure 3 when the tool holder is returned to its starting position after thel tools have perform-ed the several operations upon the work, the spring fillserving as a shock absorber to relieve the stop arm 4B- from extensive strains incidental to the return of the collar2S-thereagainst.

The outer end of the .screw shaft -37- is extended into an axially alined ope-ning -41G in the stop arm 43- to assist in holding said arm against lateral roc-king movement about the axis of its supporting rod -42-- Shaft reciprocating mea-ns.

The outer ends of the supporting shafts -7- for the tool holders are reduced in diameter and threaded externally and are engaged by internally threaded sleeves 47- having their inner ends provided with annular flanges -48- and their outer ends keyed at -49- to the hub of a hand wheel 50- which is mounted on the outer end of the sleeve.

The intermediate portion of the sleeve -4!T- is journaled in a collar -52- between the vflange -48- and inner end of the hub of the hand wheel 50- with suitable end thrust bearings -53- and 54,- for holding the collar against axial movement relatively to the sleeve.

rlubular lock nuts -o5 are engaged in the outer ends of the sleeves -47- to bear against the corresponding outer ends of the shafts -7 for holding the sleeves against accidental turning movement on their respective shafts.

Each of the collars -52- is provided with diametrically opposite radial studs 5G- carrying suitable blocks -57- loose thereon7 said blocks being engaged in slots -58- in the opposite arms of Y-shaped levers 59-.

These levers are pivoted at -60 to suitable brackets -Glon opposite ends of the frame l` to swing about horizontal axes transversely of and below the outer ends of the shafts -7-.

The lower ends of said levers are provided 'ith rollers -62- bearing against the outer ends of a pair of longitudinally extendingl slide bars -63- which are mounted in suitable guides -64- on the frame -land are provided at their inner ends with rollen bearing against the peripheries of a. pair of cams -GG-.

These cams are keyed or otherwise. secured in. opposite relation to a cross shaft 67'- which is journaled in suitable bearings on the main supporting frame -lsubstantially midway between the ends of said frame and directly below the opening -2- in said frame7 said shaft being provided with a pulley -68- adapted to be connected to any available source of power forrotating said shaft in the direction indicated by arrow o5-1, Figure l.

The lower ends of the levers 59* are provided with pendant arms wliicliwarc connected by springs --70- to the. adjacent ends of the frame -lfor retracting the levers --59- and holding their rollers in contact with the adjacent ends of the slide bars -53-- rlf'he apparatus shown adapted to perform similar operations simultaneously upon opposite sides of a radiator or other objects anda therefore, the mechanisms for performing these operations are similar but reversed so that the description of one mechanism may serve for both mechanisms and if desired these mechanisms may be li'uiltiplied iusfletinitely for work requiring similar operations on one or both sides or one ol the mechanisms may be used separately.

0 para tz'oa.

Assuming now that the Canis -GG- are .in the position shown in Figure l with their low sides presented to their respective rollers 6,5 thereby allowing the springs "-270- to operate their respective levers 59- to draw. the oorres}' onding shatts -7- ontrvardly until limited bythe engagement ot the rollers -62 with the outer ends et the corresponding slide bars -6B-, the shafts -7- and tool holders carried thereby being then in their starting positions.

The worlr such as a rariator A then clamped in glace upon the traine of the inac-hine in the opening 2 and between the boring tools -13- with the openings to be bored in the radiator' registering with said tools.

N ow if the shafts i1- are rotated by their driving members and the cani shalt 67- is rotated in the direction indicated by the arrow xthe rotation et the cams 6- will transmit motion tl'irough the bars G3-'- to the lower ends ot the levers thereby forcing the sliia'lts T- inwardly oward each other so that the boring tools i3-- will lirst enter opposite sides oit the radiator and this borin operation will be immediately followed by the chasers or tappingmembers H16 for threading the bores in both sides ot the radiator simultaneously.

This inward a-:ial movement ot the shaft +7- and tool holders -lO- will cause a similar axial movement of the cutting tools --f25- to machine the opposite outer faces ot the radiator around the previously bored and tapped holes.

l.lilhen the sha'lts T-- are in their @te positions as shown more clearly in Fig and 3, the collars #28 will be drawn back against their respective stops the shafts J7- and tool holders #10- will be drawn back stili further, thereby forcing the tapered ends -l.7- oil? the 'c 48; between andagein lieinuer their respective tapping members vih-- 'iid members outwardly o their cut- Positions iinstthe action et their rorresponding springs -l9.

Then as the shafifts -i'--- and tool holders --l()- are advanced to the u the coll/irs W28m will be Pieried with the tool holder have i f operation in the pleted their radiator at ot the cella 3' c i respective s op meinl'iers titi-- thereby ing the further movement of the collars ne s inseam and plungers lS- while the sl'ia'fts T- and lool holders wl0- .continue their inward movement to bring the cutting' tools m-25- into cutting engagement with opposite faces of the radiator.

This limitation ot the inward movements ot the collars w28- causes the tapered portions 1.7- o1 the plungers -18- to be withdrawn troni between the chasers 16- thus permitting said chasers to be retracted inwardly by their respective springs -19- thereby freeing the chasers 'trom engagement with the radiator at about the time the high points of the cams -66- contact with their respective rollers Relatively short arcs oit the cam surfaces at the high points of the cams are concentric with the axis of the sha'lt -G'TH to allow a limited dwell of the shafts -7- and tool holders l0- at their innermost positions tor completing the acin operations and permitting the withdrawal ol the tapping members 16 from their cutting positions.

The descents ot' the cams from the high points to the Alow points are rather abrupt to permit quick return ot the shafts 7 and tool holders to their starting posit-ions through the medium of the springs 70- ready for a repetition of the operations just described.

What I claim is l. In a device 'for machining radiators and the like, a rotary and axially movable tool holder, tapping members slidable transversely ot and upon the tool holder, a boring tool secured to the tool holder at one end et the tapping members, a facing tool mounted on the tool holder at the other end of the tapping members, a tapered member slidable lengthwise ot and between the tapping members for moving the same outwardly when the tapered member is moved in one direction and tor permitting inward movement ot the tapping members when the tapered member is moved in the opposite direction, a collar reciprocally movable lengthwise of and upon the tool holder, means for transmitting reciprocal motion 'from the collar to the tapered member, means tor stopping the axial movement ot the collar as the tool holder is moved into the work to cause the tool holder to move the tapping members away from the tapered member, and automatic moans i: r stopping the axial movement ollv the collar in the opposite direction as the lool holder is withdrawn' trom the work.

il. A device lor machining radiators and the like as in claim l in which one oi the collar stopping means is yielding` to reduce the shock upon the collar as the tool holder returned to its starti position.

ln witness whereof I ha hereunto set my hand this 24th day of April 1926. 

